3673681 has 12 divisors (see below), whose sum is σ = 4092676. Its totient is φ = 3294720.

The previous prime is 3673651. The next prime is 3673687. The reversal of 3673681 is 1863763.

It can be written as a sum of positive squares in 2 ways, for example, as 576081 + 3097600 = 759^2 + 1760^2 .

It is a de Polignac number, because none of the positive numbers 2^k-3673681 is a prime.

It is a super-2 number, since 2×3673681² = 26991864179522, which contains 22 as substring.

It is a Duffinian number.

Its product of digits (18144) is a multiple of the sum of its prime factors (432).

It is not an unprimeable number, because it can be changed into a prime (3673687) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11581 + ... + 11893.

Almost surely, 2^3673681 is an apocalyptic number.

It is an amenable number.

3673681 is a deficient number, since it is larger than the sum of its proper divisors (418995).

3673681 is a wasteful number, since it uses less digits than its factorization.

3673681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432 (or 421 counting only the distinct ones).

The product of its digits is 18144, while the sum is 34.

The square root of 3673681 is about 1916.6848984640. The cubic root of 3673681 is about 154.3004339196.

The spelling of 3673681 in words is "three million, six hundred seventy-three thousand, six hundred eighty-one".